First two paragraphs of article:

A Fin24 user is curious about the difference between ETFs and the shares on the JSE. He writes:

I would like to know the difference between exchange-traded funds (ETFs) and the shares of listed companies on the JSE.

Mike Brown, managing director of etfSA, responds:

ETFs are securities listed and traded on the JSE, like other company securities.  

Where they differ is that the ETF gives the investor exposure to an entire portfolio (fund) of shares and not just to a single company, as in company securities.